Product Features: 18/10 Cr-Ni Stainless Steel 1.0 thickness. Super capsule base for homogeneous heat conduction. Exterior surfaces carefully polished with a matte finish. Clean with hot water and dishwashing detergent before first use. Do not use hard metal brushes while cleaning. Can be cleaned in the dishwasher. The Proline Gastro series is designed to meet the most demanding requirements making it the perfect cookware for professional/industrial kitchens.